Glass-melting-tank accessory.



GLASS Be it known that Lampo@ Mmfsmae, a citizen' of the Uluw'zedStates5 residing ai", C0- luznbus, Fnkln Qimmy, Ukio.; have invent Qd certain new and ussfu )improvements L Glass-Meltng-Tank Accesscmes; of which the folowng is a s eccnzon.,

This invention aos mprovemens; in accessories ofjglassmeltng tanks desggn'e for use in vconjumton Wh glass-drawing apparatus Y in. a metngmik employed in cmjuntion with glass drawing; appaaus, 'Lm inv-k will be provided with. anmlet in iha XL vf'a of h@ milk 0x' in lfhe mail @f5 A hay b1; mi; helr'efrom, ibex@ bei@ smh am auf auch glass-drawing appmaws @m )Shy-9d in connection with the tank? each @miei J22- lverng to che pot of its glass-drawing :1pjgamus.

'in use of gzssdrmvng avppajmuis f5. condition of the f lass when lom tlw 'mk ''o the poi 'as @Si the Y ughes importan@ @be economieal operai-,im of the tzmk nait.- xallj calls 'for "what might ne claff ing 'heaf :md The namur@ ogm moe-n is Such that While in che lne/Rires* being used them is an znnmms 4 the tempera-tuya und conssancy the consisiency varying rm mw@ jf ai 'che bottom of the mnh to a, free sind very hot lqud ab das gop $33k., The glass at @he iop of 'he themnk may ue entirely les hat a Mq, successful use in drawing appmatus. V glass WGH down in the mass w'] De $00 {wir} and hck for successlia. Pali, 30mg @Gini between th@ 'l l 'm0 and ihe which is:

and

evel lol 'which glass ma. H1 vi a condtlon suitable succssmd use; a

which :-n

. chamber lng-Cim inf -,outlet block, thev block is readily removed.

from the wall of the furnace in the ordinary manner employed in such cases, but-in the resent'case ythe operation is'yery much facilitated by eans hereafter described, as well as by the fact 'that the device for closing' the outlety block is outside instead of ins1 e Giving attention now, to the settling-- chamber, and assuming that its roof l1, and its floor are entirely absent, it is found that'the settling-chamber contains a body of glass isolated from the main body of glass in the tank. .It may be here stated that while the settling-chamber might if desired be secured to the tank,-itmay' have itsweight and size so related to the specific gravity of the molten glass that it will iioat' in .the glass at proper height and be -held of the glass.

against the wall of the tank by theJ pressure The depth of notch 8, or the height of dam 9, which is the same thing, is' to be so adjusted, by proper selection of settling* chamber structures, that the glass entering the' settling-chamber immediately overA the dani will, nconnection'with the upper level j of glass enterin the settling-chamber, prosoV duce in the sett lngfchamber such tempera- .ture and consistency as ts the gla'ss for employment in the glass drawing" apparatus. And in this connection it isto be understood that the body of glass isolated within the settling-chamber is protected by thewalls of the chamber from the surrounding glass so that there is a lessening of tendency forthe surroundingglass to unduly raise or -lower the temperature of the lass within .the 'settlingchamben the settling-chamber,

thus fol-ming a tempering chamber and providing a body of glass under a degree of control not ossible to exercise upon the main body of) glass within the tank.

-In some cases it may be desirable to pro tect the body of glass ywithin .the settling# chamber from' .the excessive heating effects of the gases above the glass inthe tank, and from the radiation. from the roof of the tank. In such cases roof l1, may be applied over the top of the settling-chamber so as to more or less protect the glass according to the position given to the roof which. may be appliedv partly or wholly on the chamber. .Again owing to the variations in the Working of, glass and in the workings of the melt-` floor may be eifec'ted by means'of implements inserted into-the tanks as usual'in connection with glass melting tanks,` and if,

in cases of emergency, the outlet-block requires removal as ,for purposes ofvrenewal as before referred to, the settling-chamber with its floor', and with or without its roof ,may be abnormall elevated and form within the tank-a co erdam lleaving the operative quite 'at liberty to remove and replace the outlet-block.

In the working of glass melting tanks it isa matter of commonobservation that no matter how satisfactory may be the condition of glass within the tank at'some point near the top of that mass, those portions of the mass at and near the walls of the tank are of a character Iinclined toward stringiness, this being due largely to the fact that the cutting of the inwalls of the tank producescorrugations or general roughness and Same refrigeration'. The 'glass in this conwardly beyond the .inner surface of the inwall. rlhis projection has two oices. First, in the absence of the settling-chamber or'its floor or roof, the projection insures that the glass received by the outlet block should not be glass in immediate Contact with the wall of the tank,'and, 2nd, the outflow of glass through the outlet results in a Wearin away .of the inner end of the outlet conduit, and the inward projection herein provided for will allow for more wear than would other-- wise be permissible, while the ready removabiflity and renewability of the outlet-block as before referred Ato,.pr,0vides for taking care of the excessive wear of the inner end of the outlet conduit. It is to be observed that the outlet block is not shouldered and thatit may, in being set in the opening of the tank, be pushed through the opening in the Wall thereof as far as the-position of gate 6 will permit, therefore, the lessening ofthe 'projection of the inner 'end of the outlet-bleek due to its Wearing away may be and having that one of its Walls farthest compensated foi1 by readjustng it farther .from the outlet lower than the side-'Walls 10 into the furnace. I so as to form :L dam, substantially as set I elaim: forth.

A glass melting tank accessory consisting LEOPOLD MMBOURG. of a settling chamber disposed at the outlet Witnessesz from Jfhe tank and adapted to isolate molten M. S. HELDEN, glass from the general mass Within the tank H. M. lVlILDERSo 

